Improvement in sash-holders



mA BUCKMAN.

Improvement. in YSash-Holders..

Patented May 21,1872'.

Y LM,

Wnes ses.

UNITED STATES PATENT' OEEIo.

IEA E'UCKMAN, 0E WILLIAMsBURe, NEW YORK.

IMPROVEMENT IN SASH-HOLDERS.

VSpecification forming part of Letters Patent No. 126,872, dated May 21,1872.

SPECIFICATION. .To all whom it may concern:

Be it known that I, IRA BUGKMAN, of Williarnsburg, in the county ofKings and State of New York, have invented a certain new and usefulImprovement in Automatic Window-Sash Lock; and the following is a full,clear, and exact description of the same, reference-being had to theaccompanying drawing making a part of this specification, in which-Figure l represents a front-face view of my stop. Fig. 2 is a side viewof the same, showing the relative position of the stop when locked. Fig.3'is a vertical cut-section` side view through its center. Fig. 4 is avertical view of the same with the locking-bar pressed in. Fig. 5 showsan isometrical perspective view ofthe portion of the lock to be attachedto the upper sash. Fig. 6 is an isometrical view of the plate to beattached to the top of the meeting-rail of the lower sash. Fig. 7 is anisometrical view of the casing of the lock, with the bar removed. Fig. 8is an isometrical view of the bar as detached from the casing. Figs. 9,10, and 11 show the method of construction in its different parts. Myinvention relates to self-acting window sash locks; and it consists informing a frame or case (to be inserted in a portion of the upperWindow-sash) of sheet metal, pressed out and struck up into proper form,ornamental or otherwise, having an attached portion cut from the back ofthe same, to be drawn out and tempered into a spring Vwhich works withinthe lock-bar; also, of a hollow locking-bar struck up from sheet-steel,pivoted in the upper portion of the case operated by the string, andhaving its lower or stop end roughened to take hold on a similarroughened plate secured to the lower sash, all as hereinafter more fullydescribed.

'Ihe frame or case A is pressed out of sheet metal the proper size andshape, and at the same time cut through a portion of the plate to formthe spring a, which is drawn and tempered, and bent into such a form asto act efficiently on the lock-bar B, which may be made of sheet-steelpressed out the proper size and form, and the end for forming the step bor bearing roughened at the same time, and the holes c for the pin Cpunched in, when the blank is placed in another die and struck up in theform of a square bar, with the ends closed, the inside being open, (likeatrough,) in which the spring a operates. The frame or case A is alsostruck up with a die and punch, (in the form of a trough,) with theedges e c turned over at right angles to rest upon the face of the sash,into which it is fitted, and form a nish. The edges e e may be madeplain gilt or plate, highly finished, or they may be embossed or chasedwith ornamental designs, and provided with ears, f j', on the end andsides, if desired, to fasten them firmly to the sash. A portion of theframe or case A from the pin on pivot c is covered with a plate or cap,D, which may be of thinner, lighter metal, struck up with an entablatureor Irontispiece. This plate D is provided with yiianges d d to closeover on the edges c e and compressed firmly t0 them.

The movement of ^the locking-bar B is adjusted by the angle h on theunder side of the portion above the pivot c, so that the spring a canonly pressit out to the required. position, thus obviating the usualstud or stop placed for the purpose. A roughened surface-plate, E, issecured to the lower sash ina proper position for the lock-bar B to comein contact with when the window is closed, thereby preventing thepossibility of the lock-bar from tripping or being thrown back by anypower applied to the sash from the outside.

The Toughened end b of the lock-bar B is made as hard as steel can behardened, for the purpose of resisting a saw, or any tool that could beinserted between the meeting-rails of the window-sash.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. The automatic window-sash lock, con sisting of the frame or case A,with spring a, the locking-bar B, pivoted at c and rougir portion of thecase A when drawn out, temened at its lower or stop end, and the pered,and arranged relatively thereto, as and roughened plate E, allconstructed, arranged, for the purpose described.

and operating as and for the purposes set IRA BUCKMAN. forth. Witnesses:

2. In combination with the elements of the J. B. WOODRUFF,

above, the spring a, cut from an attached A. J. B. LARKIN.

